Kolkata flat registration: stamp duty, market value and how e-Nathikaran works

Rules and rates as of 17 October 2026.

The short version

When you register a flat in Kolkata, stamp duty is worked out on the flat's market value as assessed by the registration system, not simply on the price you agreed with the seller. On the West Bengal Directorate of Registration and Stamp Revenue's own rate page, a sale deed for a property in Kolkata or another municipal area carries 6% stamp duty if the market value is ₹1 crore or less, and 7% if it is above ₹1 crore. The registration fee is 1% of the market value. The whole process now runs through the state's e-Nathikaran system.

This guide explains each of those three pieces, and where the costs can surprise you.

Stamp duty: the rates, and the ₹1 crore line

A sale deed is a "conveyance" under Article 23 of Schedule IA to the Indian Stamp Act, 1899, as amended by West Bengal. The directorate's stamp duty page (last updated 20 May 2025) gives these rates, with the slabs it shows as effective from 1 February 2018:

Where the property is	Market value up to ₹1 crore	Market value above ₹1 crore
Kolkata and Howrah (Improvement Act areas), other municipal corporations, municipalities and notified areas	6%	7%
Other areas (panchayat areas)	5%	6%
Registration fee, all areas	1% of market value, minimum ₹50	1% of market value, minimum ₹50

Two cautions. First, the column headings on the official page are garbled, and an older slab at ₹40 lakh still appears beside the ₹1 crore one. The ₹1 crore line matches the state's Finance Act of 2021, which used the same split for its temporary rebate. Even so, confirm the slab at the registration office. Second, the higher rate appears to apply to the whole value, not just the part above ₹1 crore. That creates a cliff, which the example below shows.

The rebate years are over

Many older articles and calculators still quote lower rates. Those reflect a temporary relief. The West Bengal Finance Act, 2021 cut duty by two percentage points (to 4% and 5% in Kolkata and municipal areas) for documents executed up to 30 October 2021, and the state later extended a 2% remission alongside a 10% cut in market values. News reports from July 2024 say both measures ended on 1 July 2024. We could not open the government circular that ended them, so treat the end date as reported. If a calculator gives you 4% for a Kolkata flat today, it is out of date.

Market value: how the figure is set

West Bengal does not publish a single printed "circle rate" book the way some states do. Under the West Bengal Stamp (Prevention of Undervaluation of Instruments) Rules, 2001, made under section 47A and related sections of the Stamp Act, the state keeps a digital database of market values covering every plot under each registering officer. When you enter the property's details in a requisition form, the system works out the market value automatically. The values are revised from time to time.

The system's figure becomes the base for duty and fee. The directorate's website has a separate market value query for flats and apartments that you can use before you sign anything. We could not open that page, so we cannot list exactly which flat details (floor, age, area and so on) it asks for. The rules also provide for a reference to the Collector when the value set out in a deed is lower than the market value, and for an appeal against the Collector's decision. Our editors could not read the full text of those rules, so ask a lawyer about time limits if you dispute a valuation.

e-Nathikaran: what changes for you

e-Nathikaran is West Bengal's online registration system. It replaced the older stand-alone computerised registration (CORD) system, and the state registration rules were amended in November 2020 to refer to it. A Government of India technology magazine describes it as linked to GRIPS, the state's online payment gateway, and to automated mutation. It reports roughly 1.25 lakh deeds registered and over 37 lakh e-assessments a month.

In practice, the sequence most buyers follow is: fill the online requisition (pre-registration) form with the deed and party details; get the e-assessment of market value, duty and fee; pay online; book a slot at the registration office; then appear in person with the seller and witnesses for photographs, fingerprints and signing. The directorate's step-by-step guide was not readable to us, so check the current order of steps on the portal itself.

There is also a user charge for e-Nathikaran registration. A Finance Department notification of June 2016 fixed it at ₹240 per transaction for up to 17 pages, plus ₹7 a page beyond that. We read this in a reproduced copy, not on a government site.

A worked example

Suppose you agree to buy a resale flat in a Kolkata Municipal Corporation ward for ₹85 lakh, and the e-assessment puts its market value at ₹95 lakh.

• Stamp duty at 6% (market value is not above ₹1 crore): ₹95,00,000 × 0.06 = ₹5,70,000
• Registration fee at 1%: ₹95,00,000 × 0.01 = ₹95,000
• Total, before the e-Nathikaran user charge and incidental fees: ₹6,65,000

Had duty been charged on the agreed price instead, it would have been ₹85,00,000 × 0.07 = ₹5,95,000 for duty and fee together. The higher market value costs you ₹70,000 more.

Now the cliff. At a market value of exactly ₹1 crore, duty is ₹6,00,000 and the fee ₹1,00,000, a total of ₹7,00,000. At ₹1.01 crore, duty jumps to 7%: ₹1,01,00,000 × 0.07 = ₹7,07,000, plus a fee of ₹1,01,000, a total of ₹8,08,000. One lakh more in value means ₹1,08,000 more in duty and fee.

Market value	Stamp duty rate	Stamp duty	Registration fee (1%)	Total
₹85 lakh	6%	₹5,10,000	₹85,000	₹5,95,000
₹95 lakh	6%	₹5,70,000	₹95,000	₹6,65,000
₹1 crore	6%	₹6,00,000	₹1,00,000	₹7,00,000
₹1.01 crore	7%	₹7,07,000	₹1,01,000	₹8,08,000
₹1.2 crore	7%	₹8,40,000	₹1,20,000	₹9,60,000

All figures are illustrative, for a property in Kolkata or another municipal area, and use the rates shown on the directorate's page. Your actual market value comes only from the e-assessment.

Before you register

• Run the market value query for the flat on the directorate's website before you agree a price, and note whether it crosses ₹1 crore.
• Budget duty and fee in cash. Lenders usually finance the flat, not the registration costs.
• Keep the e-assessment slip and payment receipts; you will need them at the office and later for mutation.
• If the assessed value looks wrong, a property lawyer can advise on whether to seek a correction or appeal.